Horse Lake

Horse Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year.

A TSI near 49 places Horse Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Horse Lake reaches 25 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 715 acres, Horse Lake fits the Minnesota median for monitored lakes, with 13.4 miles of shoreline. Within Lake County's 142 graded lakes, Horse Lake ranks 99 — below the local median, though not at the bottom.

Horse Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Horse Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Horse Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.